A control information interpretation method for use in a mobile communication system including a terminal and a base station, wherein the terminal receives, from the base station, control information including transport block information and DeModulation Reference Signal (DM-RS) antenna port allocation indication information, checks a number of the transport blocks allocated to the terminal based on the transport block information, and interpreting the DM-RS antenna port allocation indication information according to the number of transport blocks.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A control information interpretation method of a terminal in a mobile communication system, the method comprising: receiving, by the terminal, control information including transport block information and Reference Signal (RS) antenna port allocation indication information that indicates up to eight antenna ports; checking a number of transport blocks allocated to the terminal based on the transport block information; and interpreting the RS antenna port allocation indication information according to the number of transport blocks allocated to the terminal, wherein the RS antenna port allocation indication information is used for data demodulation.
2. The method of claim 1 , wherein, if one transport block is enabled, the RS antenna port allocation indication information is configured to indicate up to 4 antenna ports for 4 layers, wherein an RS for one layer includes one of a combination of 0 or 1 and a 1 st antenna port or a 2 nd antenna port, wherein RSs for two layers include the 1 st antenna port and the 2 nd antenna port, wherein RSs for three layers include the 1 st antenna port, the 2 nd antenna port, and a 3 rd antenna port, and wherein RSs for four layers include the 1 st antenna port, the 2 nd antenna port, the 3 rd antenna port, and a 4 th antenna port.
3. The method of claim 1 , wherein the control information includes indication information for notifying the terminal as to whether a number of other terminals allocated at least one layer transmitted by a base station is greater than or equal to 1.
4. The method of claim 1 , wherein if two transport blocks are enabled, the RS antenna port allocation indication information is configured to indicate up to 8 antenna ports for 8 layers, wherein an RS for two layers includes one of a combination of scrambling sequences of 0 or 1 and a 1 st antenna port and a 2 nd antenna port, and wherein RSs for N layers include N antenna ports, starting from the 1 st antenna port and increasing to an N th antenna port.
5. The method of claim 1 , wherein interpreting the RS antenna port allocation indication information according to the number of transport blocks comprises: if one transport block is enabled and the one transport block has previously been transmitted using 2, 3, or 4 layers, RSs for 2, 3, or 4 layers are only supported for retransmission of the one transport block.
6. The method of claim 5 , wherein if the one transport block is enabled and the one transport block has previously been transmitted using the 2 layers, the RSs for the 2 layers are supported for the retransmission of the one transport block, wherein if the one transport block has previously been transmitted using the 3 layers, the RSs for the 3 layers are supported for the retransmission of the one transport block, and wherein if the one transport block has previously been transmitted using the 4 layers, the RSs for the 4 layers are supported for the retransmission of the one transport block.
7. The method of claim 1 , wherein the RS antenna port allocation indication information includes at least one of an index indicating an RS antenna port 0 allocated a scrambling code 0 in a rank pattern 2, an index indicating an RS antenna port 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna port 0 allocated a scrambling code 1 in the rank pattern 2, an index indicating the RS antenna port 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in a rank pattern 4, and an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, when the number of transport blocks is 1, wherein the RS antenna port allocation indication information further includes at least one of an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0, 1, 2, 3, and 4 allocated the scrambling code 0 in a rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, and 5 allocated the scrambling code 0 in the rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, and 6 allocated the scrambling code 0 in the rank pattern 8, and an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, 6, and 7 allocated the scrambling code 0 in the rank pattern 8, when the number of transport blocks is 2, and wherein the RS antenna port 0 is a first antenna port allocated an RS, and an arbitrary RS antenna port n is indexed in an ascending order from the RS antenna port 0.
8. A control information transmission method of a base station in a mobile communication system, the method comprising: checking, by the base station, a number of transport blocks allocated to a terminal; selecting Reference Signal (RS) antenna port allocation indication information that indicates up to eight antenna ports according to the number of transport blocks allocated to the terminal; generating control information including transport block information indicating the number of transport blocks and the RS antenna port allocation indication information; and transmitting the control information to the terminal, wherein the RS antenna port allocation indication information is used for data demodulation.
9. The method of claim 8 , wherein the control information includes indication information for notifying the terminal as to whether a number of other terminals allocated at least one layer transmitted by a base station is greater than or equal to 1.
10. The method of claim 8 , wherein if one transport block is enabled, the RS antenna port allocation indication information is configured to indicate up to 4 antenna ports for 4 layers, wherein an RS for one layer includes one of a combination of 0 or 1 and a 1 st antenna port or a 2 nd antenna port, wherein RSs for two layers include the 1 st antenna port and the 2 nd antenna port, wherein RSs for three layers include the 1 st antenna port, the 2 nd antenna port, and a 3 rd antenna port, and wherein RSs for four layers include the 1 st antenna port, the 2 nd antenna port, the 3 rd antenna port, and a 4 th antenna port.
11. The method of claim 8 , wherein if two transport blocks are enabled, the RS antenna port allocation indication information is configured to indicate up to 8 antenna ports for 8 layers, wherein an RS for two layers includes one of a combination of scrambling sequences of 0 or 1 and a 1 st antenna port and a 2 nd antenna port, and wherein RSs for N layers include N antenna ports, starting from the 1 st antenna port and increasing to an N th antenna port.
12. The method of claim 8 , wherein if one transport block is enabled and the one transport block has previously been transmitted using 2, 3, or 4 layers, RSs for 2, 3, or 4 layers are only supported for retransmission of the one transport block.
13. The method of claim 12 , wherein if the one transport block is enabled and the one transport block has previously been transmitted using the 2 layers, the RSs for the 2 layers are supported for the retransmission of the one transport block, wherein if the one transport block has previously been transmitted using the 3 layers, the RSs for the 3 layers are supported for the retransmission of the one transport block, and wherein if the one transport block has previously been transmitted using the 4 layers, the RSs for the 4 layers are supported for the retransmission of the one transport block.
14. The method of claim 8 , wherein the RS antenna port allocation indication information includes at least one of an index indicating an RS antenna port 0 allocated a scrambling code 0 in a rank pattern 2, an index indicating an RS antenna port 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna port 0 allocated a scrambling code 1 in the rank pattern 2, an index indicating the RS antenna port 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in a rank pattern 4, and an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, when the number of transport blocks is 1, wherein the RS antenna port allocation indication information further includes at least one of an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0, 1, 2, 3, and 4 allocated the scrambling code 0 in a rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, and 5 allocated the scrambling code 0 in the rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, and 6 allocated the scrambling code 0 in the rank pattern 8, and an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, 6, and 7 allocated the scrambling code 0 in the rank pattern 8, when the number of transport blocks is 2, and wherein the RS antenna port 0 is a first antenna port allocated an RS, and an arbitrary RS antenna port n is indexed in an ascending order from the RS antenna port 0.
15. A terminal for interpreting control information received from a base station in a mobile communication system, the terminal comprising: a radio communication unit that receives control information including transport block information and Reference Signal (RS) antenna port allocation indication information that indicates up to eight antenna ports; and a controller that checks a number of transport blocks allocated to the terminal based on transport block information and interprets the RS antenna port allocation indication information according to the number of transport blocks allocated to the terminal, wherein the RS antenna port allocation indication information is used for data demodulation.
16. The terminal of claim 15 , wherein the control information comprises indication information for notifying the terminal as to whether a number of other terminals allocated at least one layer transmitted by the base station is greater than or equal to 1.
17. The terminal of claim 15 , wherein if one transport block is enabled, the RS antenna port allocation indication information is configured to indicate up to 4 antenna ports for 4 layers, wherein an RS for one layer includes one of a combination of 0 or 1 and a 1 st antenna port or a 2 nd antenna port, wherein RSs for two layers include the 1 st antenna port and the 2 nd antenna port, wherein RSs for three layers include the 1 st antenna port, the 2 nd antenna port, and a 3 rd antenna port, and wherein RSs for four layers include the 1 st antenna port, the 2 nd antenna port, the 3 rd antenna port, and a 4 th antenna port.
18. The terminal of claim 15 , wherein if two transport blocks are enabled, the RS antenna port allocation indication information is configured to indicate up to 8 antenna ports for 8 layers, wherein an RS for two layers includes one of a combination of scrambling sequences of 0 or 1 and a 1 st antenna port and a 2 nd antenna port, and wherein RSs for N layers include N antenna ports, starting from the 1 st antenna port and increasing to an N th antenna port.
19. The terminal of claim 15 , wherein the controller interprets the RS antenna port allocation indication information according to the number of transport blocks such that if one transport block is enabled and the one transport block has previously been transmitted using 2, 3, or 4 layers, RSs for 2, 3, or 4 layers are only supported for retransmission of the one transport block.
20. The terminal of claim 19 , wherein if the one transport block is enabled and the one transport block has previously been transmitted using the 2 layers, the RSs for the 2 layers are supported for the retransmission of the one transport block, wherein if the one transport block has previously been transmitted using the 3 layers, the RSs for the 3 layers are supported for the retransmission of the one transport block, and wherein if the one transport block has previously been transmitted using the 4 layers, the RSs for the 4 layers are supported for the retransmission of the one transport block.
21. The terminal of claim 15 , wherein the RS antenna port allocation indication information includes at least one of an index indicating an RS antenna port 0 allocated a scrambling code 0 in a rank pattern 2, an index indicating an RS antenna port 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna port 0 allocated a scrambling code 1 in the rank pattern 2, an index indicating the RS antenna port 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in a rank pattern 4, and an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, when the number of transport blocks is 1, wherein the RS antenna port allocation indication information further includes at least one of an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0, 1, 2, 3, and 4 allocated the scrambling code 0 in a rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, and 5 allocated the scrambling code 0 in the rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, and 6 allocated the scrambling code 0 in the rank pattern 8, and an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, 6, and 7 allocated the scrambling code 0 in the rank pattern 8, when the number of transport blocks is 2, and wherein the RS antenna port 0 is a first antenna port allocated an RS, and an arbitrary RS antenna port n is indexed in an ascending order from the RS antenna port 0.
22. A base station for transmitting control information in a mobile communication system, the base station comprising: a controller that checks a number of transport blocks allocated to a terminal, selects Reference Signal (RS) antenna port allocation indication information that indicates up to eight antenna ports according to the number of transport blocks allocated to the terminal, and generates control information including transport block information indicating the number of transport blocks and the RS antenna port allocation indication information; and a radio communication unit that transmits the control information to the terminal, wherein the RS antenna port allocation indication information is used for data demodulation.
23. The base station of claim 22 , wherein the control information comprises indication information for notifying the terminal as to whether a number of other terminals allocated at least one layer transmitted by the base station is greater than or equal to 1.
24. The base station of claim 22 , wherein if one transport block is enabled, the RS antenna port allocation indication information is configured to indicate up to 4 antenna ports for 4 layers, wherein an RS for one layer includes one of a combination of 0 or 1 and a 1 st antenna port or a 2 nd antenna port, wherein RSs for two layers include the 1 st antenna port and the 2 nd antenna port, wherein RSs for three layers include the 1 st antenna port, the 2 nd antenna port, and a 3 rd antenna port, and wherein RSs for four layers include the 1 st antenna port, the 2 nd antenna port, the 3 rd antenna port, and a 4 th antenna port.
25. The base station of claim 22 , wherein if two transport blocks are enabled, the RS antenna port allocation indication information is configured to indicate up to 8 antenna ports for 8 layers, wherein an RS for two layers includes one of a combination of scrambling sequences of 0 or 1 and a 1 st antenna port and a 2 nd antenna port, and wherein RSs for N layers include N antenna ports, starting from the 1 st antenna port and increasing to an N th antenna port.
26. The base station of claim 22 , wherein if one transport block is enabled and the one transport block has previously been transmitted using 2, 3, or 4 layers, RSs for 2, 3, or 4 layers are only supported for retransmission of the one transport block.
27. The base station of claim 26 , wherein if the one transport block is enabled and the one transport block has previously been transmitted using the 2 layers, the RSs for the 2 layers are supported for the retransmission of the one transport block, wherein if the one transport block has previously been transmitted using the 3 layers, the RSs for the 3 layers are supported for the retransmission of the one transport block, and wherein if the one transport block has previously been transmitted using the 4 layers, the RSs for the 4 layers are supported for the retransmission of the one transport block.
28. The base station of claim 22 , wherein the RS antenna port allocation indication information includes at least one of an index indicating an RS antenna port 0 allocated a scrambling code 0 in a rank pattern 2, an index indicating an RS antenna port 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna port 0 allocated a scrambling code 1 in the rank pattern 2, an index indicating the RS antenna port 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in a rank pattern 4, and an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, when the number of transport blocks is 1, wherein the RS antenna port allocation indication information further includes at least one of an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 0 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, and 2 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0 and 1 allocated the scrambling code 1 in the rank pattern 2, an index indicating the RS antenna ports 0, 1, 2, and 3 allocated the scrambling code 0 in the rank pattern 4, an index indicating the RS antenna ports 0, 1, 2, 3, and 4 allocated the scrambling code 0 in a rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, and 5 allocated the scrambling code 0 in the rank pattern 8, an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, and 6 allocated the scrambling code 0 in the rank pattern 8, and an index indicating the RS antenna ports 0, 1, 2, 3, 4, 5, 6, and 7 allocated the scrambling code 0 in the rank pattern 8, when the number of transport blocks is 2, and wherein the RS antenna port 0 is a first antenna port allocated an RS, and an arbitrary RS antenna port n is indexed in an ascending order from the RS antenna port 0.
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February 11, 2011
September 8, 2015
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